(+)-(3aS,4R,7aS)-4-hydroxy-4-(m-tolylethynyl)-octahydro-indole-1-carboxylic acid methyl ester 、
吡咯烷-1-丁酸 以to yield (3aR,4S,7aR)-methyl 4-(4-(pyrrolidin-1-yl)butanoyloxy)-4-(m-tolylethynyl)octahydro-1H-indole-1-carboxylate的产率得到(3aR,4S,7aR)methyl 4-(4-(pyrroIidin-1-yl)butanoyloxy)-4-(m-tolylethynyl)octahydro-1H-indole-1-carboxylate